Network Engineer – L3

Job Description: Network Engineer – L3 (Onsite)

Location: Warsaw, IN

Type: Full-time / Onsite

Role Overview

As a Senior L3 Network Engineer, you will be responsible for the design, implementation, and high-level support of a complex enterprise network environment. You will serve as the highest escalation point for technical issues, ensuring the stability, security, and optimization of data center and cloud-managed infrastructures. This role requires deep expertise in Cisco ACI, Citrix NetScaler, and Meraki ecosystems.

Key Responsibilities

• Infrastructure Support: Provide expert-level (L3) troubleshooting and management for global enterprise network operations.
• Strong expertise and Hands-on experience with ACI.
• Data Centre & Switching: Configure and maintain Cisco Nexus platforms and manage Cisco ACI fabric, including the definition and troubleshooting of fabric policies and tenant configurations.
• Application Delivery: Manage Citrix NetScaler ADC for load balancing, GSLB, SSL offloading, and traffic optimization; utilize Citrix ADM Dashboard for centralized monitoring.
• Wireless & Edge: Design and optimize wireless performance via Cisco WLC and manage cloud-based networking (VPN, Firewalls, SD-WAN) through Cisco Meraki.
• Network Security: Implement and maintain identity management and web security using Cisco ISE and Cisco Umbrella.
• Operational Management: Administer IPAM (Men & Mice) and oversee the lifecycle of SSL certificates via Digicert and CSC.
• Monitoring & Tooling: Optimize network visibility using SolarWinds and Grafana, including alert suppression and performance dashboarding.
• Vendor Coordination: Act as the primary technical point of contact for major telecom providers (Zayo, Lumen, AT&T, Granite) to resolve WAN and circuit issues.
• Security Protocols: Ensure secure administrative access using Putty, Jump Servers, and FTP protocols.

Required Technical Expertise

• Cisco ACI: Advanced knowledge of APIC controllers, leaf-and-spine architecture, and policy-driven fabric deployment.
• Citrix NetScaler ADC: Hands-on experience with high-availability configurations, Content Switching, and Rewrite/Responder policies.
• Cisco Meraki: Proficiency in managing MX Firewalls, MS Switches, and MR Access Points via the Meraki Dashboard.
• Routing & Switching: Expert-level mastery of Cisco Nexus (9K/7K/5K) and Catalyst platforms.

Qualifications & Soft Skills

• Experience: 10 years of progressive experience in network engineering within large-scale environments.
• Analytical Thinking: Exceptional root-cause analysis skills for resolving complex, multi-vendor network outages.
• Communication: Ability to document high-level designs and present technical solutions to stakeholders and leadership.
• Collaboration: Proven track record of working effectively in high-pressure, mission-critical environments.

Disclaimer

HCL is an equal opportunity employer, committed to providing equal employment opportunities to all applicants and employees regardless of race, religion, sex, color, age, national origin, pregnancy, sexual orientation, physical disability or genetic information, military or veteran status, or any other protected classification, in accordance with federal, state, and/or local law. Should any applicant have concerns about discrimination in the hiring process, they should provide a detailed report of those concerns to secure@hcltech.com for investigation.

Compensation and Benefits

A candidate’s pay within the range will depend on their work location, skills, experience, education, and other factors permitted by law. This role may also be eligible for performance-based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program; 401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need-based leave with no designated number of leave days per year); and 10 paid holidays per year.